Glucose/ Dextrose

Glucose/Dextrose producing technology

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1 Preparation:
In the Preparation Section starch slurry is PH adjusted to create optimum conditions for the liquefaction enzymes.

2 Liquefaction:
Adjusted starch milk is pumped to 1st jet cooker to have the 1st liquefaction done with steam, the gelatinized starch solution is sent to 1st retention tank and then pumped to 2nd jet cooker to have the 2nd Liquefaction done with steam, the hydrolysate is sent to 2nd retention tank. The other part of the liquefaction enzyme is added to the discharge line of the tank. After the solution is pumped to a continuous plug flow reactor to complete the liquefaction. The temperature has been cooling to 60℃ before it goes to the Saccharification unit.

3 Saccharification:
Adding HCl continuously to adjust the PH value according to the hydrolysate flow rate, and has the saccharification with the help of an enzyme, during the process, stir it to make the saccharification goes evenly, after achieving the required DE value, the material is sent to the next unit.

4 Filter:
There is a large number of insoluble impurities in saccharified liquid and most of the impurities are protein. By using a filter could remove the insoluble impurities in the saccharified liquid.

5 Carbon decoloration：
Decoloration is to remove dissolved organic impurities in the water, most of the organic impurities are the colored organic impurities, powdered activated carbon, which is insoluble in water and has a strong adsorption capacity to organic impurities, is added to the sugar solution, and then the organic impurities in the sugar solution are removed when the activated carbon is filtered through a pressure filter. 

6 Ion-exchange :
After the insoluble impurities and organic impurities in the saccharified are removed, there are still many inorganic impurities in the water, which exits as positive ions and anionic in the water, and they will be removed by ion exchange. The positive ion in saccharified liquid is exchanged with cation exchange resin H+, meanwhile, the anionic is exchanged with the anion exchange resin OH-, at last, exchange the H+ with OH-, which turns out water, so all the inorganic impurities have been turned into water and removed.
Certainly, to keep the exchangeability of exchange resin, it usually uses acid and alkali to regenerate the cation and anion resin respectively when the exchangeability weakened.

7 Evaporation:
The glucose is cleaned through the above procedure then sent to the evaporator for concentrating to reach the required DS as the final product.

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G-Luckey is an engineering consulting firm, offer fermentation process, corn wet milling service in starch sugar manufacturing industry. We have many cases for fructose, glucose, erythritol, allulose, xylitol, sorbitol production line.